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Finding the Fourth Proportional to 10,614.79, 15,900.30 and 6,218.91

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Solution

The fourth proportional to 10,614.79, 15,900.30 and 6,218.91 is: 9,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.79 : 15,900.30 = 6,218.91 : x
  2. Step 2: Convert to fraction form
    10,614.79/15,900.30 = 6,218.91/x
  3. Step 3: Cross multiply
    10,614.79x = 15,900.30 × 6,218.91
  4. Step 4: Simplify right side
    10,614.79x = 98,882,503.58
  5. Step 5: Solve for x
    x = 98,882,503.58/10,614.79
  6. Step 6: Final answer
    x = 9,315.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.